Device for the band or wire drive control in magnetic recorders or the like



April 3, 1962 G. GELOSO ETAL 3,028,111

DEVICE FOR THE BAND OR WIRE DRIVE CONTROL IN MAGNETIC RECORDERS OR THELIKE Filed Nov. 3, 1958 s Sheets-Sheet 1 FIG. 1

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April 3, 1962 G. GELOSO ETAL 3,028,111

DEVICE FOR THE BAND OR WIRE DRIVE CONTROL IN MAGNETIC RECORDERS OR THELIKE Filed Nov. 3, 1958 5 sheetfisheet 2 FIG.3 19 T/ 2o SE2 22V///////AI 3 V/////////i1 23 Q VIII/m 13 FIG. 6

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April 3, 1962 cs. GELOSO ETAL 3,028,111

DEVICE FOR THE BAND 0R WIRE DRIVE CONTROL IN MAGNETIC RECORDERS OR THELIKE Filed Nov. 5, 1958 3'Sheets Shee'c 6 FIG. 5 Q

INVENTORS mn' g BY cam A. be S frr'kzr United States Patent 3,028,111 IDEVICE FOR THE BAND R WIRE DRIVE CON- TROL IN MAGNETIC RECORDERS OR THELIKE Giovanni Geloso, Viale Brenta 29, and Amiga Castelli, AeroportoForlanini, both of Milan, Italy Filed Nov. 3, 1958, Ser. No. 771,270Claims priority, application "Italy Feb. 9, 1956 13 Claims. (Cl.242-5512) The present invention relates to a device for the control ofband or wire magnetic recorders and the like.

This application is a continuation in part of copending applicationSerial No. 637,926, filed February 4, 1957, and now abandoned andentitled Device for the Band or Wire Drive Control in Magnetic Recordersor the Like.

One of the objects of the present invention is to provide in a magneticrecorder a device which, when actuated by the operator, will providefirst a stopping of the feeding of the tape or wire, then movement offriction pads away from the recording head, and finally rewinding of thetape or wire.

Another object of the present invention is to provide a magnetic rewrderwith an additional control which, when actuated by the operator, willsequentially provide a stopping of thefeed, a quick feed, and thenrewinding of the tape or wire.

The invention is substantially characterized by the fact that itcomprises a maneuvering oscillating lever designed to operate upon thefeeding means at the normal speed of themagnetic band (or wire) in sucha manner that in one lever position there is obtained the separation ofthe feeding rolls and therefore the instantaneous stop of the band (orwire) and in another position both the separation of the feed rolls andthe moving of the recording head pads away from the recording head andthereafter the quick band (or wire) feeding by means of the winding uproll.

The novelfeatures which are considered as characteristic for theinvention are set forth in particular'in the appended claims. Theinvention itself, however, both as to its construction and its method ofoperation, together with additional objects and advantages thereof, willbe best understood from the following description of specificembodiments When read in connection with the accompanying drawings, inwhich:

FIG. 1 is a fragmentary plan view of one embodiment of a magneticrecorder according to the present invention;

FIG. 2 is a perspective view of a pair of pad carrying levers formingpart of the structure of FIG. 1;

FIG. 3 is a fragmentary sectional view taken along line 3-3 of FIG. l'inthe direction of the arrows;

FIG. 4 is a fragmentary sectional view taken along line 44 of FIG. 1 inthe direction the arrows; and

FIG. 5 is a fragmentary sectional view taken along line 5-5 of FIG. 1 inthe direction of the arrows.

The upper horizontal plate A of the frame of the device is shown inFIG. 1. The plateA carries a pair of stationary shafts'l and 2 on whichloose rolls 3 and 4 are freely turnable, respectively. Roll '3 supportsa sup ply spool SS and roll 4 a take-up spool TS, which spools areindicated in dash-dotted lines in FIG. 1. Actually, the roll 4 is in theform of a pulley, as described below, and acts through a frictionclutchalso described below in connection with FIG. 5 on the take-up spool.

An unillustra-ted electric driving inotor has its shaft 5 (-FIG. 1)pressing frictionally against a periphery of a loose roll =6 supportedfor free turning movement by the stationary shaft '7 carried by theplate 'A. This roll '6 which is thus driven by the shaft'5 'olf'theelectric motor 3,028,111 Patented Apr. 3, 1962 in turn frictionallydrives a fly wheel 8, the periphery of this fly wheel being infrictional contact with the roll 6. The roll 4 is driven by the flywheel shaft 9 through a belt 10, the shaft '9 fixedly carrying asuitable pulley which cooperates with the belt 10, and the roll 4 itselfbeing in the form of a pulley, as clearly shown in FIG. 5. The fly wheel8 is fixed to the shaft 9 which is turnably supported by the plate A forfree rotation about its axis through any suitable bearing arrangement.

The directions of rotation of the parts 5, 6, 8 and 4 are indicated bythe arroows B, C, D, E, respectively.

The shaft 9 has a portion extending above the pulley which cooperateswith the belt 10, and this latter portion of the shaft 9 constitutes onefeed roller. The feed of the tape (or wire) at normal speed results fromthe frictional cooperation between the feed roller shaft 9 and thefreely turnable feed roller 11 which acts as a loose pressure roll. Theband (or wire) passes and is nipped between the rolls 9 and 11, theloose roll 11 turning freely in the direction of arrow F (FIG. 1). Thisroll 11 is freely turnable on a shaft 12 which is carried by a lever 13described below.

Between the roll 4 and the take-up spool there is a friction clutcharrangement shown in FIG. '5 and described below, and this frictionclutch arrangement compensates for speed difierences between the roll 4and the take-up spool.

The lever 13 which fixedly carries the shaft 12 on which the feed roll11 is freely turnable is supported by a pivot pin 14 for turningmovement about the axis of this pin 14, the latter being fixedly carriedby and extending vertically from the plate A of the frame. The lever 13is provided with an extension 13 which is also turnable on the pivot 14,and the lever 13 has an elongated arcua-te slot 17 through which a screw16 passes into threaded engagement with the extension 13', so that alimited angular adjustment between the lever portion 13 and 13' isprovided in this way. A spring 15 is hooked at one end onto the plate Aand at its opposite end to a pin fixed to the lever 13', so that thelever 13, 13' is urged by the spring 15 to turn around the pivot pin 14in a clockwise direction, as viewed in FIG. 1, and thus the spring 15urges the roll 11 toward the shaft 9.

A rigid plate 22 is fixedly carried by and spaced over the plate A inparallel relation thereto, any suitable pins or the like fixing theplate 22 to the plate A in spaced parallel relation thereover, and itwill be seen from FIG. 1 that the lever 13 extends between the plates Aand 22, while the shaft 9 extends upwardly through the plate 22 to belocated in engagement with the feed roller 11;. The belt 10 and thepulley which is fixed to the shaft 9 extend beneath the plate 22, whilethe feed roll 11 extends over the plate 22 into frictional engagementwith the portion of the shaft 9 which extends above the plate 22. Thisplate 22 fixedly carries a pair of parallel pivot pins 249 and 2d, andthese pivot pins pivotaliy support a pair of levers 19 and 19,respectively, which are shown most clearly in FIG. 2. As is evident fromFIG. 2, the levers 19 and 19 cross over each other and respectivelycarry the pads 18 and 18. A pair of unillustrated springs act on thelevers 19 and 19, respectively, to urge the pads or pressure means 13and 13 against the recording head RH, schematically indicated indash-dotted lines, so as to provide the braking action, the magneticband passing between the pads and the recording head. The lever 19. hasa portion 23' provided with a downwardly extending tooth 53 which passesdownwardly through an aperture 23 formed in the plate 22, this tooth 53being located beside the lever 13, as is shown most clearly in FIG. 3.It will be noted from FIG. 2 that the lever 19 has a shoulder-54directed toward the lever 19, so

that when the lever 19' is turned in a clockwise direction, so that thepad 18' approaches the viewer of FIG. 2, the shoulder 54 will engage thelever 1 to turn the latter in a counter clockwise direction, and in thisway the pads 18 and 18' will simultaneously be moved away from therecording head upon such turning of the lever 19. As will be pointed outbelow, when the lever 13 turns in a counter clockwise direction, asviewed in PiG. 1, around the pivot pin 14, this lever 13 will engagethe'tooth 53 so as to turn both of the levers 19 and 19 in the mannerdescribed above, and in this way both of the pads 18 and 18' are movedsimultaneously away from the recording head.

The end of the extension 13' which is distant from the pivot pin 14 isprovided with a downwardly extending projection 24 extending downwardlythrough an aperture 25 in the plate A. This structure is shown mostclearly in FIG. 4. Thus, as may be seen in FIG. 4, the projection 24 isprovided on its right side, as viewed in FIG. 4, with an inclined edgewhich cooperates with a roller 26 supported for free turning movement byan arm of a rectangular frame 27. This rigid rectangular frame 27 islocated just beneath and spaced from the plate A, and it isinterconnected with the plate A by a pair of leaf springs 28 which arerespectively fixed at their left ends to the underside of the plate Aand which are respectively fixed at their right ends to the underside ofthe left arm of the rectangular frame 27. These springs 28 urge theframe 27 upwardly about a substantially horizontal axis located adjacentthe left side of the frame 27, as viewed in FIG. 1. Thus, when thisframe 27 is turned downwardly in a manner described below, the roller 26will engage the inclined right edge of the projection 24, as viewed inFIG. 4, to turn the lever 13, 13 in a counter clockwise direction, asviewed in FIG. 1, around the pivot pin 14 against the force of thespring 15.

At the right side of the frame 27, as viewed in FIG. 1, is located apush button 36 guided in any suitable bearing carried by the plate A forvertical movement and having a portion located beneath the frame A andfixedly carrying a projection 29 which extends over a portion of theframe '27, as indicated in FIG. 1. Thus, when the operator depresses thepush button 36, the frame 27 will be turned downwardly so that theroller 26 will act on the inclined edge of the projection 24 of theextension 13 to turn the lever 13, 13 as described above, and the leafsprings 28 not only return the frame 27 to its rest position, but alsothey act through the frame 27 on the projection 2% to maintain thebutton 30 in its upper rest position.

Thus, when the operator depresses the button 30 the frame 27 will turndownwardly about a substantially horizontal axis adjacent its left side,as viewed in FIG. 1, and the roller 26 will cooperate with element 24 toturn the lever means or common operating means 13, 13 in a counterclockwise direction, as viewed in FIG. 1. During the first part of thisturning movement of the lever 13, 13 the roll 11 moves away from theshaft 9 so that the tape (or wire) is no longer nipped between the rolls9 and 11 and the feeding of the tape by these rolls ceases. Then, duringthe next part of the turning of the lever 13, 13 the lever 13 engagesthe tooth 53 so as to act on the levers 19 and 19 in the mannerdescribed above in order to move the pads 13 and 18' away from therecording head, the levers 19 and 19 moving in a direction opposite fromthat indicated by the arrows H and H shown in FIG. 2.

At the same time structure which cooperates with the left free end ofthe lever 13, as viewed in FIG. 1, is operated by the turning of thelever 13. This structure includes an upwardly directed car 50 fixed tothe left end of the lever 13 as viewed in FIG. 1. A rod 31 is fixed tothe ear t and this red 31 passes through an opening in an car 52 of alever 33 which is supported for turning movement by a pivot pin 34 fixedto and extending upwardly from the plate A so that the lever 33- issupported intermediate its ends for turning movement about the pivot pin34. The rod 31 fixedly carries a collar 51 which abuts against the ear52 in the position of the parts shown in FIG. 1, and on the side of theear 52 opposite the collar 51 a coil spring 32 is coiled around the rod31, this coil spring pressing with one of its ends against the car 52and with its opposite end against a collar or snap ring fixedly carriedby the rod 31 at its end distant from the ear 50.

This lever 33 is pivotally connected by a pivot pin 35 with a lever 36which is turnably connected with the roll 37 at the center thereof, thisroll 37 being carried by the lever 36 over the roll 6 as well as over aportion of the lever 33 in the position of the parts shown in FIG. 1. Awire spring 38 is wound around the pivot pin 35, presses with one endagainst the pivot pin 34-, and with its opposite end against a pinfixedly carried by the lever 36, so that this spring 38 urges the lever36 in a counter clockwise direction, as indicated by the arrow M, shownin FIG. 1, and the spring 38 also cooperates with the lever 33 to urgethe latter in the direction of the arrow L shown in FIG. 1. This roll 37is thus maintained in frictional engagement with the roll 3 which turnsin the direction of the arrow N, and in the position of the parts shownin FIG. 1 the roll 37 turns freely in the direction of the arrow P.

Thus, when the lever 13 is turned in a counterclockwise direction, asviewed in FIG. 1, about pivot pin 14 in the manner described above, thecar 50 will pull on the rod 31 so as to compress the spring 32, and theresult is that the lever 33 turns in the direction opposite to the arrowL so that the roll 37 is moved into the gap between the rolls 3 and 39.This roll 39 is fixed to the roll 6 for turning movement therewith, andthe diameter of the roll 37 is longer than the distance between therolls 3 and 39, so

that when the lever 13 has been turned through a sufficient distance theroll 37 will be pressed against the rolls 3 and 39, and in this way thedirection of rotation of the roll 3 will be reversed so that it turns ina direction opposite to the arrow N,-and in this way the tape (or wire)will be rewound.

Of course, it is necessary to disconnect the drive from the roll 4 tothe reel which is turned by the roll 4, and this disconnection of thedrive is simultaneously brought glioGut by the structure which is shownmost clearly in Referring now to FIG. 5, it will be seen that thestationary shaft 2 fixedly carries a collar which supports the pulley 4for free rotation thereon. If desired the collar 60 may be replaced by asuitable thrust hearing. A Washer 61 is located against the top surfaceof the pulley 4, and this washer 61 is freely turnable around the shaft2. A spring 62 is coiled around the shaft 2 and presses downwardly onthe washer 61, the top end of the spring 62 pressing against a plate 63which is fixed to the lower side of an annular channel member 64 ofsubstantially U-shaped cross section, as indicated in FIG. 5. The topsurface of the annular channel member 64 is pressed by the spring 62against the underside of a plate 65 which is also freely turnable on theshaft 2 while being constrained against axial movement with respectthereto by the collars 66 and 67 respectively fixed to the shaft 2 andrespectively engaging the upper and lower faces of the plate 65 in themanner shown in FIG. 5. Instead of collars 66 and 67 it is possible touse suitable thrust bearings. This plate 65 carries at its top face fins68 which are adapted to cooperate in a known way with slots in the spoolso as to transmit the turning movement of the plate 65 to the spoolwhich carries the tape or wire, and this spool has a much largerdiameter than the pulley 4. In addition, an arm 69 is fixedly carried bythe rectangular frame 27, extends upwardly therefrom through an aperture40 in the plate A, and this arm 69 has a free end portion extending intothe annular channel member 64 and rotatably supporting in the interiorof the channel member 64 a roller 70. Thus, when the frame 27 is at restthe roller 70 will be out of engagement with the channel member 64although located in the interior thereof, as indicated in FIG. 5, and atthis time the friction clutch structure of FIG. will transmit theturning movement of the pulley 4 to the plate 65 so that a reel carriedby the latter will turn with the plate 65. However, when the button 30is depressed so as to turn the frame 27 downwardly, the roller 70 willengage the channel member 64 so as to move the latter downwardly againstthe force of the spring 62 so as to compress the latter beyond theposition thereof shown in FIG. 5, and as a result the channel member 64will move out of engagement with the plate 65 and the turning movementof the pulley 4 will no longer be transmitted to the plate 65. It shouldbe noted that the parts 64 and 65 cooperate as a friction clutch alsofor the purpose of permitting the plate 65 to slip with respect to thechannel member 64 due to the difference between the angular speed of thepulley 4 and the feed speeds of the tape provided by the elements 9 and11. If desired, a suitable coating of friction material may be locatedat the bottom side of the plate 65 and the top side of the channelmember 64.

Therefore, when the button 30 is depressed by the operator fouroperations take place, namely, the roll 11 is moved away from the roll 9to stop the feed of the tape or wire, the pads 18 and 18 are moved awayfrom the recording head, the friction clutch structure shown in FIG. 5disconnects the drive to the take-up reel, and the structure shown atthe left of FIG. 1 operates to place the 'roll 37 in engagement with theroll 39 as well as with the roll 3 to reverse the direction of therotation of the latter, and thus a quick rewinding of the tape onto thespool driven by the roll 3 takes place when the button 30 is depressed.It should be noted that the force with which the pads 18 and 18' pressthe tape or wire against the recording head is greater than the force ofthe friction clutch derived from the spring 62, so that when the roll 11is moved away from the roll 9 the feeding of the tape will stopimmediately, the tape being held by the pressure of the pads 18 and 18against the recording head, and the channel member 64 simply slips withrespect to the plate 65 at this time. Therefore, the drive from thepulley 4 cannot continue to feed the tape after the roll 11 is movedaway from the roll 9, and the disengagement of the friction clutch ofFIG. 5 takes place simultaneously with the movement of the pads 13 and18 away from the recording head, so that when the roll 37 transmits thedrive from the roll 39 to the roll 3 to reverse the direction ofrotation of the latter, the tape will be unwound from the take-up reelback onto the supply reel without any resistance.

It is also possible with the structure of the invention to turn thelever 13, 13' in a direction opposite to the arrow G shown in FIG. 1with a lever 41 which is shown at the left of FIG. 1. This lever 41 ismanually turnable by the operator, and for this purpose the lever 41 hasa handle 43 which is accessible to the operator. The lever 41 is locatedbeneath the lever 13 between the latter and the plate A, and it issupported for turning movement by a pivot pin 42 fixed to and extendingupwardly from the plate A through a suitable opening in the lever 41. Awire spring 44 is coiled around the pivot pin 42 and presses with oneend against a pin 41' fixedly carried by the lever 41 so as to urge thelever 41 in the direction of the arrow Q shown in FIG. 1. This wirespring 44 also bears against the pivot pin 34 as shown in FIG. 1. Thus,when the lever 41 is in its rest position it is maintained by the spring44 in the position shown in FIG. 1. At its right end the lever 41carries an upwardly directed car 45 which extends up to and slightlybeyond the elevation of the lever 13, so that when the operator turnsthe lever 41 in a direction opposite to the arrow Q, the ear 45 will en-'gage the lever 13 to turn the latter around the pivot pin 14 inopposition to the spring 15. At its opposite end the lever 41 has an endportion 46 located at the elevation at the left end of the lever 33below the collar 51. In other words the end 46 of the lever 41 islocated in the path of movement of the lower end portion of the ear 52beneath the collar 51.

When the operator turns the lever 41 in a clockwise direction, as viewedin FIG. 1, the end 45 of the lever 41 will first engage the lever 13 soas to turn the latter first to a position where the roll 11 isdisengaged from the roll 9, and thus the feeding of the tape or wirestops immediately at this point. It should be noted that at this timethe lever 13 has not been turned through a distance sufiicient to causethe pads 18 and 18 to move away from the recording head, so that thesepads frictionally hold the tape against the recording head with a forcegreater than that of the friction clutch as described above inconnection with FIG. 5, so that the feeding stops immediately. Thus, itis possible to turn the lever 41 through a first angle which will simplycause the tape or wire to stop immediately.

During the second portion of the turning of the lever 13 by manualturning of the lever 41, the pads 18 and 18' will be moved away from therecording head, in the above described manner. At this time the endportion 46 of the lever 41 will be located in the path of movement ofthe lever 33, so that although the rod 31 together with the collar 51move away from the ear 52 to compress the spring 32, the lever 33 andthe ear 52 cannot turn around the pivot 35 because of the engagementbetween the ear 52 with the end '46 of the lever 41, and thus at thistime the roll 11 is moved away from the roll 9, the pads 18 and 18' aremoved away from the recording head, but the roll 37 cannot move underthe action of the spring 32 into engagement with the roll 39 so as toreverse the direction of rotation of the roll 3. Therefore, at this timethe take-up reel driven from the pulley '4 continues to turn under thedrive from the belt 10 and through the friction clutch structure shownin FIG. 5, and thus the tape is very rapidly advanced at this time. Thediameter of the take-up reel is so much greater than the pulley 4 thatthe peripheral speed of the tape wound onto the take-up reel is muchgreater than the feed speed provided by the rolls 9 and 11, so that thetape is very quickly advanced at this time, and in this way it ispossible by turning up the lever 41 to very quickly advance the tape upto a desired extent.

If the lever 41 is turned further in a clockwise direction, as viewed inFIG. 1, beyond the position where this lever 41 has its end 46 blockingthe turning of the lever 33, then the end 46 will move to the right, asviewed in FIG. 1 beyond the ear 52, and the spring 32 will now be ableto turn the lever 33 so as to place the roll 37 in engagement with theroll 39 to reverse the direction of rotation of the roll 3 so as tobring about rewinding of the tape.

As may be seen from FIG. 6', the end portion 46 of the lever 41 is at anelevation lower than the collar 51, but the entire lever 41 is at anelevation higher than the lever 33. Therefore, while the end 46 of thelever 41 is capable of engaging the car 52 to block turning of the lever33, when the lever 41 is turned so as to locate the end 46 thereof tothe right of the ear 52, as viewed in FIGS. 1 and 6, the lever 33 canturn freely beneath the lever 41 in order to place the roll 37 inengagement with the roll 39.

Of course, it is also necessary at this time to disengage the frictionclutch of FIG. 5. For this purpose the extension 13' fixedly carries abracket 71 shown in FIGS. 1 and 5, this bracket 71 having a portionextending over the pulley 4 and having an ear 72 which fixedly carries ashaft 73 which is inclined upwardly to the left, as viewed in FIG. 5,and this shaft turnably supports a roller 74 restrained by suitablecollars on the shaft 73 from axial movement along the shaft 73. Thestructure carried by the extension 13 is such that when the lever '41has been 7 turned through an angle sufiicient to locate its end 46 tothe right beyond the ear 52, as viewed in FIGS. 1 and 6, the lever 13,13 will have been turned through an angle sufficient to place the roller74- in engagement with the annular channel member 64, and the inwardmovement of the roller 74- toward the ads of the shaft 2 causes thechannel member 64 to be depressed against the action of the spring 62,so that in this way the friction clutch is also disengaged by turning ofthe lever 41. When the roller 74 is in engagement with the channelmember 64 the shaft 73 is located in a vertical plane which passesradially through the axis of the shaft 2, and the distance of the roller74 from the member 64 is such that the latter will not be moved awayfrom the plate 65 until after the end 46 of the lever 41 has moved tothe right beyond the ear 52. Thus, when the roller 37 engages the roller39 the friction clutch is disengaged by the structure carried by theextension 13, and the tape can be quickly rewound.

Summing up, with the lever 41 there are four possible positions. Thereis the rest position shown in FIG. 1. There is also the first positionwhere the turning of the lever 41 simply causes the roll 11 to move awayfrom the shaft 9 so as to stop the feed of the tape. Then there is thesecond position where the end 46 of the lever 41 blocks the turning ofthe lever 33 while the pads 18 and 18 are out of engagement with therecording head, so that the tape can be very quickly advanced. Andfinally there is the position where the tape is quickly rewound. Ofcourse, whenever the operator desires simply to rewind the tape, thenthis is very easily brought about by depression of the button 30 toproduce the abovedescribed operations.

It will be understood that each of the elements described above, or twoor more together, may also find a useful application in other types ofrecorders differing from the types described above.

While the invention has been illustrated and described as embodied incontrols for recorders, it is not intended to be limited to the detailsshown, since various modifications and structural changes may be madewithout departing in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist ofthe present invention that others can by applying current knowledgereadily adapt it for various applications without omitting featuresthat, from the standpoint of prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this inventionand, therefore, such adaptations should and are intended to becomprehended within the meaning and range of equivalence of thefollowing claims.

What is claimed as new and desired to be secured by Letters Patent is:

1. In a magnetic recorder, in combination, a pair of feed rolls one ofwhich has an active position relatively close to the other feed roll tocooperate therewith for feeding a band or wire and an inactive positiondisplaced from said other feed roll to prevent cooperation between saidfeed rolls; a pair of pressure means having an active position pressingthe band or wire against a recording head and an inactive positiondisplaced from said active position to prevent said pressure means frompressing the band or wire against the recording head; supply roll meansfor supporting and turning a supply spool, said supply roll meansrotating in an unwinding direction during feeding of a tape or wire froma supply spool to the pressure means and feed rolls and rotating in arewinding direction opposite to said unwinding direction duringrewinding of the tape or wire onto the supply spool; rewind turningmeans having an inactive position displaced from said supply roll meansand an active position cooperating with said supply roll means forrotating the latter in said re winding direction; and common movingmeans cooperating with said one feed roll, said pressure means, and saidrewind turning means for first moving said one feed roll from saidactive to said inactive position thereof while leaving said pressuremeans in said active position so that movement of said band or wire isstopped by pressing the same against said recording head, for thensequentially moving said pressure means from said active to saidinactive position thereof, and for thereafter sequentially moving saidrewind turning means from said inactive to said active position thereofupon operation of said common moving means.

2. In a recorder as recited in claim 1, take-up roll means forsupporting and turning a take-up spool on to which a tape or wire fed bysaid feed rolls is wound; and second lever means cooperating with saidfirst lever meansfor turning the latter to move said one feed roll fromsaid active to said inactive position thereof and to move said pressurepads from said active to said inactive position thereof, said secondlever means cooperating with said first-mentioned lever means to preventthe latter from moving said rewind turning means to said active positionthereof, so that said take-up roll means can advance a tape or wirewithout recording sound thereon, said second lever means being movablein a given direction from a rest position to an operating position wheresaid second lever means cooperates with said first-mentioned levermeans, and said second lever means being turnable in said givendirection beyond said operating position thereof to a second operatingposition where said second lever means does not prevent saidfirst-mentioned lever means from moving said rewind turning means tosaid active position thereof.

3. In a recorder, in combination, a pair of feed rolls one of which ismovable from an active position close to the other feed roll to aninactive position displaced from said other feed roll; a pair ofpressure pads movable from an active to an inactive position; supplyroll means for carrying and turning a supply spool, said supply rollmeans rotating in an unwinding direction during feeding of a tape orwire by said feed rolls and in an oppositerewinding direction duringrewinding of the tape or wire on to the supply spool; rewind turningmeans movable from an inactive position to an active positioncooperating with said supply roll means for rotating the latter in saidrewinding direction; first lever means cooperating with said one feedroll and said pressure pads for first moving said one feed roll to saidinactive position thereof and for then moving said pressure pads to saidinactive position thereof; second lever means carrying said rewindturning means for moving the latter to said active position thereof andhaving a portion which moves along a given path during movement of saidrewind turning means to said active position thereof; spring meansoperatively connected with said first and second lever means fortransmi-tting movement of said first lever means to said second levermeans and for delaying the movement of said rewind turning means to itsactive position until after said pressure pads are in their inactiveposition; and a single operating lever turnable from a rest position toa first operating position acting on said first lever means to move saidone feed roll and pressure pad-s to their inactive positions, saidoperating lever having a portion located in the path of movement of saidportion of said second lever means when said operating lever is in saidfirst operating position thereof to prevent said spring means frommoving said second lever means to locate said rewind turning means insaid active position thereof, and said operating lever means beingturnable beyond said first operating position to a second operatingposition acting on said first lever means to maintain said one feed rolland pressure pads in their inactive positions and locating said portionof said operating lever out of the path of movement of said portion ofsaid second lever means to release the latter to said spring means forlocating said rewind turning means in its active position, so that whensaid operating lever is in its second operating position a tap or wirewill be rewound.

4. In a recorder, in combination, firstfeeding means movable between anactive position in which said feeding means is adapted to engage a tapefor feeding said tape at a selected substantially uniform speed in afirst direction and an inactive position in which the tape is not fed bysaid first feeding means; second feeding means for feeding said tape insaid first direction with a speed greater than said selected speed;stopping means movable between an active position in which said stoppingmeans are adapted to engage said tape to prevent feeding of said tape bysaid second feeding means when said first feeding means is in saidinactive position thereof and an inactive position in which saidstopping means is disconnected from said tape; rewind means for feedingsaid tape in a second direction opposite to 'said first direction, saidrewind means being movable between an active position in which saidrewind means feeds said tape in said opposite direction and an inactiveposition; lever means operatively connected to said first feeding means,said stopping means and said rewind means and being movable between arecording position in which said first feeding means and said stoppingmeans are in their active positions and said rewind means is in saidinactive position so that said tape will be moved at said selecteduniform speed in said first direction, a stop position in which saidfirst feeding means is moved by said lever means to said inactiveposition while said stop means remains in said active position and saidrewind means in said inactive position so that said tape remains at astandstill, a fast advance position in which said first feeding meansand said stopping means are moved by said lever means to their inactiveposition while said rewind means remains in its inactive position sothat said tape is moved by said second feeding means in said firstdirection at a speed greater than said selected speed, and a rewindposition in which said first feeding means and said stop means are movedto their inactive positions while said rewind means is moved to saidactive position so that said tape is moved by said rewind means in saidsecond direction; and a single operating means cooperating with saidlever means for moving said lever means between said positions thereof.

5. In a recorder, in combination, first feeding means movable between anactive position in which said feeding means is adapted to engage a tapefor feeding said tape at a selected substantially uniform speed in afirst direction and an inactive position in which the tape is not fed bysaid first feeding means; second feeding means for feeding said tape insaid first direction with a speed greater than said selected speed;stopping means movable between an active position in which said stoppingmeans are adapted to engage said tape to prevent feeding of said tape bysaid second feeding means when said first feeding means is in saidinactive position thereof and an inactive position in which saidstopping means is disconnected from said tape; rewind means for feedingsaid tape in a second direction opposite to said first direction, saidrewind means being movable between an active position in which saidrewind means feeds said tape in said opposite direction and an inactiveposition; lever means operatively connected to said first feeding means,said stopping means and said rewind means and being movable between arecording position in which said first feeding means and said stoppingmeans are in their active positions and said rewind means is in saidinactive position so that said tape will be moved at said selecteduniform speed in said first direction, a stop position in which saidfirst feeding means is moved by said lever means to said inactiveposition while said stop means remains in said active position and saidrewind means in said inactive position so that said tape remains at astandstill, a fast advance position in which said first feeding meansand said stopping means are moved by said lever means to their inactivepositions while said rewind means remains in its inactive position sothat said tape is moved by said second feeding means in said firstdirection at a speed greater than said selected speed, and a rewindposition in which said first feeding means and said stop means are movedto their inactive positions while said rewind means is moved to saidactive position so that said tape is moved by said rewind means in saidsecond direction; spring means operatively connected to said lever meansand tending to keep said lever means in said recording position thereof;and a single operating-means cooperating with said lever means formoving said lever means against the force of said spring means from saidrecording position first to said stop position then to said fastadvanceposition and finally to said rewind position during movement ofsaid operating means in one direction;

6. In a recorder, in combination, first feedin'gmea'ns movable betweenan active position in which said feeding means is adapted to engage atape for feeding said tape at a selected substantially uniform speed ina first direction and an inactive'position in which the tape-is not fedby said first feeding means; second feeding means'for-feeding said tapein said first direction with a speed greater than said selected speed;stopping means movable between an active position in which said stoppingmeans are adapted to engage said tape to prevent feeding of said tape bysecond feeding means when said first feeding means is in said inactiveposition thereof and an inactive position in which said stopping meansis disconnected from said tape; rewind means for feeding said tape in asecond direction opposite to said first direction, said rewind meansbeing movable between an active position in which said rewind meansfeeds said tape in said opposite direction and an inactive position,said second feeding means including slip clutch meanspermitting-slipping of said second feeding means during feeding of saidtape by said first feeding means in said first direction and duringfeeding of said tape by said rewind means in said second direction;lever means operatively connected to said first feeding means, saidstopping means and said rewind means and being move-able between arecording position in which said first feeding means and said stoppingmeans are in their active positions and said rewind means'is in saidinactive position so that said tape will be moved at said selecteduniform speed in said first direction, a'stop position in which saidfirst feeding means is moved by said lever means to said inactiveposition while said stop means remains in said active position and saidrewind means in said inactive position so that said tape remains ata'stan'dstill, a fast advance position in which said first feeding meansand said stopping means are moved by said lever means to their inactivepositions while said rewind means remains in its inactive position sothat said tape is moved by said second feeding means in said firstdirection at a speed greater than said selected speed, and a rewindposition in which said first feeding means and said stop means are movedto their inactive positions while said rewind means is moved to saidactive position so that said tape is moved by said rewind means in saidsecond direction; and a single operating means cooperating with saidlever means for moving said lever means between said positions. thereof.

7. In a recorder, in combination, first feedingmeans including a feedroll and a pressure rollmovable between an active position in which saidpressure roll is adapted to press a tape against said feed roll and aninactive position in which said pressure roll is disconnected from saidtape; drive means for turning said feed roll at asubstantial uniformspeed in a first direction so that said tape is fed in said firstdirection when said pressure roll is in said active position thereofwith a selected substantially uniform speed; second feeding meansfor'feedin'g' said tape in said first direction with a speed greaterthan saids'elected speed, said second feeding means including take-upspool means for carrying and turning a take-up spool; transmission meansfor transmitting a drive from said drive means to said take-up spoolmeans and including a slip-clutch permitting slipping of said take-upspool means with respect to said drive means; stopping means movablebetween an active position in which said stopping means are adapted toengage said tape to prevent feeding of said tape by said second feedingmeans when said pressure roll is in said inactive positions thereof andan inactive position in which said stopping means is disconnected fromsaid tape; rewind means for feeding said tape in a second directionopposite to said first direction, said re wind means including motiontransmitting means movable between an active position in which saidmotion transmitting means connects said rewind means with said drivemeans and an inactive position in which said motion transmitting meansis disconnected from said drive means; lever means operatively connectedto said pressure roll of said first feeding means, said stopping meansand said motion transmitting means of said rewind means for moving saidpressure roll between said active and said inactive positions thereof,for moving said stopping means from said active to said inactivepositions thereof and for moving said motion transmitting means fromsaid inactive to said active postions thereof, said lever means beingmovable between a recording position in which said pressure roll andsaid stopping means are in their active positions and said motiontransmitting means is in said inactive position so that said tape willbe moved at said selected uniform speed in said first direction, a stopposition in which said pressure roll is in said inactive position whilesaid stop means remains in said active position so that said taperemains at a standstill, a fast advance position in which said pressureroll, said stopping means and said rewind means are in their inactivepositions so that said tape is fed by said second feeding means in saidfirst direction at a speed greater than said selected speed, and arewind position in which said pressure roll and said stop means are intheir inactive positions while said motion transmitting means is in saidactive position so that said tape is moved by said rewind means in saidsecond direction; and a single operating means cooperating with saidlever means for moving said lever means between said positions thereof.

8. In a recorder, in combination, take-up spool means for carrying andturning a take-up spool; drive means for turning said take-up spoolmeans in a direction in which a tape is wound on said takeup spool, saiddrive means including a spring pressed slip clutch; spring pressedpressure pad means movable between an active position in which saidpressure pad means is adapted to press a tape against a surface with apressure great enough to prevent movement of said tape by said takeupspool means when said take-up spool means are driven by said drive meansover said slip clutch and an inactive position in which said pressurepad means is disconneeted from said tape; a feed roll operativelyconnected to said drive means to be driven thereby in a direction sothat a tape pressed against said feed roll is fed toward said take-upspool; a pressure roll movable between an active position in which saidpressure roll is adapted to press said tape against said feed roll andan inactive position in which said pressure roll is disconnected fromsaid tape; lever means cooperating with said pressure roll and saidpressure pad means and movable from a rest position in which saidpressure roll and said pressure pad means are in their active positionsso that said tape will be fed by said feed roll toward that take-upspool means with a substantially uniform speed and be wound up on saidtake-up spool, to a first operating position in which said pressure rollis moved to its inactive position while said pressure pad means remainsin its active position so that said tape remains at a standstill, and toa second operating position in which said pressure roll and saidpressure pad means are moved to their inactive positions so that saidtape will be wound up with great speed on to said take-up spool; and asingle operating means cooperating with said lever means to move thelatter between said positions thereof.

9. A recorder as recited in claim 8, in which said pressure roll ismounted on said lever means.

10. A recorder as recited in claim 9, and including spring meansoperatively connected to said lever means and tending to keep said levermeans in said rest positions thereof.

11. In a magnetic recorder, in combination, a pair of feed rolls one ofwhich has an active position relatively close to the other feed roll tocooperate therewith for feeding a band or wire and an inactive positiondisplaced from said other feed roll to prevent cooperation between saidfeed rolls; a pair of pressure pads having an active position pressingthe band or wire against a recording head and an inactive positiondisplaced from said active position to prevent said pads from pressingthe band or wire against the recording head; supply roll means forsupporting and turning a supply spool, said supply roll means rotatingin unwinding direction during feeding of a tape or wire from a supplyspool to the pressure pads and feed rolls and rotating in a rewindingdirection opposite to said unwinding direction during rewinding of thetape or wire onto the supply spool; take-up roll means for supportingand turning a take-up spool onto which a tape or wire fed by said feedrolls is wound; rewind turning means having an inactive positiondisplaced from said supply roll means and an active position cooperatingwith said supply roll means for rotating the latter in said rewindingdirection; first lever means cooperating with said one feed roll, saidpressure pads, and said rewind turning means for first moving said onefeed roll from said active to said inactive position thereof, for thenmoving said pressure pads from said active to said inactive positionthereof, and for thereafter moving said rewind turning means from saidinactive to said active position thereof; and second lever meanscooperating with said first lever means for turning the latter to moveto said one feed roll from said active to said inactive position thereofand to move said pressure pads from said active to said inactiveposition thereof, and said second lever means cooperating with saidfirst lever means to prevent the latter from moving said rewind turningmeans to said active position thereof, so that said take-up roll meanscan advance a tape or wire without recording sound thereon.

12. In a magnetic recorder as defined in claim 1 in which said pair ofpressure means are constituted by a pair of pressure pads and in whichsaid common moving means are constituted by lever means.

13. In a magnetic recorder as defined in claim 12 in which said levermeans include a pair of overlapping lever members turnable about acommon axis so that said lever members are adjustable with respect toeach other, and means cooperating with said lever members for fixingsaid lever members to each other in an adjusted position with respect toeach other.

References Cited in the file of this patent UNITED STATES PATENTS2,555,643 Harrison June 5, 1951 2,639,333 Howell et a1. May 19, 19532,645,495 Nelson July 14, 1953 2,705,262 Post et al Mar. 29, 19552,705,639 Lekas Apr. 5, 1955 2,751,438 Baer June 19, 1956 2,782,263Hoehn et a1. Feb. 19, 1957 2,790,643 Gedde et al. Apr. 30, 19572,793,039 Hironimus May 21, 1957

